> There is no class that can cast stoneskin on another pc or mob.

The nexus bond can allow shifters to do this for their bondmates, unless it has been changed from what I remember.

> I'm fairly sure there aren't any wands/staves/scrolls that can grant stoneskin to anyone other than the user of said item. Therefore, what you are calling stone skin was likely another spell - invoker shields maybe?

I know of a number of stoneskin preps/items and the only one that I think -might- grant stoneskin to anyone other than the user is a scroll. But I'm not sure.

>There is no mage that can grant sanctuary

This is only true if you restrict the mage to casting. There are items that grant sanctuary. One of them is a staff. So I'd say a mage can use this to grant sanctuary. Theerkla is correct that a mage cannot cast the spell though (at least your average mage who has no extra spells).

> and priests can't be warlocks.

This is probably true. Strange things happen though. Once people would have said a necromancer couldn't be a warlock. But I've known communers try to get into warlock and they've all failed.

> I'm 99 and 44/100% sure no item does either.

This is wrong. At least one item could grant it to the angel.

> So, either someone else gave the angel sanctuary or again this was a different spell.

I suspect Theerkla is correct in that a non-warlock priest would have been the source. It would be unusual for a warlock to sanc the angel.

> That and of course, Isildur and Zulghinlour are correct. Sanctuary grants 50% damage reduction against any and all damage, regardless of alignment, type, or source.

Yep. It is the protection spell that only works against though of opposite alignment, as stated by others.